Box Butte Dam
Dam in Dawes County, Nebraska · Niobrara River · forms Box Butte Reservoir
Height
87 ft
27 m (NID height)
Length
5,508 ft
1,679 m
Completed
1946
Box Butte Reservoir today
3,984.39 ft
7 days ▲ 0.27 ft
Normal storage
31,060 acre-ft
Reservoir level measured Oct 21, 2026, 1:00 AM CDT. Full level page →
Facts
- Purposes
- Flood Risk Reduction; Irrigation
- Dam type
- Earth
- Structural height
- 87 ft
- Owner
- BUREAU OF RECLAMATION (Federal)
- Maximum storage
- 45,901 acre-ft
- Surface area
- 1,799 acres
- Hydraulic height
- 52 ft
- Drainage area
- 1,460 sq mi
- Spillway
- Uncontrolled, 590 ft wide
- Army Corps district
- Omaha District
- Also known as
- Box Butte Reservoir
- NID ID
- NE01069
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Oct 6, 2026. Search NID ID NE01069 at nid.sec.usace.army.mil. Project website.